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RE:pH – Coastscraper by Gary Kellett / eVolo

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The Illiniois - proposed design for a mile-high skyscraper by Frank Lloyd Wright, 1956 suggested by davereed, via skyscraper, picture from kjell

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Skinless Tower in Tel Aviv by Shival Omer

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Dense Rhythm by Zifan Liu & Shengping Lin

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 ’La Tour Sans Fin’ by Jean Nouvel, unbuilt, Planned for La Defense via  

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Peter Cook, Design for Sleektower and Veranda Tower, Brisbane, Queensland, Australia, 1984Print, coloured (101 x 73.5 cm) via 

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Tower proposal by Gaudi for New York City in 1908. more drawings

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The Shard / Renzo Piano via ArchDaily

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Friedrichstrasse Skyscraper Project, Berlin-Mitte, Germany, Exterior perspective from north - Ludwig Mies van de Rohe. 1921.